Electric-lamp-shade holder.



F. OVERBAGH, F. E. AYRES & I. BRENT.

ELECTRIC! LAMP SHADE HOLDER.

AYPLIOATIOI I' ILED APBJO, 1008.

Patented Nov. 10, 1908;

'pjffrerzf/ I Q9 g 35 taken upon lined-3 of Fig. 2;

45 As'shown in the UNITED STATES PA'lENT OFFICE- a.iassessesaesiisesss,was

BRENT,

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1T0 all whom it "may concern:

' Be it known that we, Fmnnmrc Oriel:- lhtoll, loam l lgirmcs, and IRYLNl-I. BRENT citizens of the United States,- and residentd ofl!l\klh$t0ll, Cook county, Hinsdule, Du page cozfifnty, and Chicago,Cook county, in the'St-atq'of Illinois, respectively, have 1nientedcertain new and useful Improvements in Electric-Lamp Shade Holders; andwe do whereby declare that the following is a full,

cleaig'and exact description thereof, reference' being-had to theaccompanying draw- I ings, and to theletters of reference n'larkedthereon, which form a part. of this specifi- ISK'tItlOll.

. 'This invention relates to snadeholders of that kind used in attachingshades "to incan-.

descent lamp fixtures and more especially to means for attaching suchshadeholders to lamp-sockets having what are known as standard shellswithout requiring any change in the construction of said socket shells.

The invention consists in the matters hereinafter described andpointed'out in the appended claims.

As shown in the accoinpan ing drawings Figure 1 is a VlO\V in side eevation of a lamp-socket and a shade attached thereto by a devrcemade inaccordance with our invention. Fig. 2 is a view showing on a much"enlarged scale the lower part of the lampsocket with the shade-holderand attaching means in section. Fig. 3 is a plan section Fig. tis adetail view in side elevation of the annular body of our improvedshade-holder. Fig. 5 .is a'side elevation of the clamping ringconstituting part of the shade-holder. Fig. 6

is a-view. in side elevation of the socket and a form of shade-holderdifi'erent somewhat from that shown in the preceding figures. Fig. 7 isa detail sectional view of the parts shown in Fig. 6. V

drawings, 5 indicates a lamp-socket of standard pattern, the shell ofwhich is proyidd near its lower end with a circumferential rib 6.

7 indicates the body of the shadeholder which, in the particular formthereof shown,

consists of a flat ring to the outer margin of which is attached theshade 8, shown in the drawings as made of conical form. The

. Specification of Ilttera Patent.

Application filed April 20, 1908. Serial No. 428,221.

shade 8 is shown as attached-to the body 7 of the shade-holder by meansof prongs 9',-

9, 9 which are cut from the hat metal body and inserted through slits,formed in the marginal. part of the shade which overlaps the outermargin of said body. Fig. 4 illustrates said prongs as being bentoutwardly at right angles to the body and Fig. 2 shows said prongs asbent against the shade-holder so as to clamp the same firmly to thebody.

The annular body of the shade-holder has its central opening madesomewhat larger in diameterthan the lower part of the socket shell, andon the inner margin of said annular body are formed a plurality-ofprongs 10, 10, 10 which extend substantially at right angles to theplane of the body. Said prongs 10, 10 are resilient or elastic andcurved or deflected inwardly at thelr extremities, so

that when the body of the holder is slipped over the lowerend of thesocket shel the ends of said prongs will press or bear against the outersurface of the shell. As preferably constructed the annular body 7 andthe prongs 10 thereon are made of a single iece of sheet metal, such assheet brass, an the prongs are made tapering outwardly or towards theirextremities. Each of said prongs '10 is, moreover, provided with anoutwardly extending stud 11. The studs 11, 11, 11 on the several prongsare arranged in spiral order, so that they together constitute what isin effect a screw-thread. 12 indicates a'clamping. ring adapted to beapplied over or a roundthe several prongs and when so applied to drawthe free ends of the same inwardly in such manner as to clamp the prongsagainst the surface of the part of the shell surrounded by the same.Said clamping rin is provided with an internal screw-threat" adapted forengagement with the spirally arranged prongs 10,10: the parts being soarran ed that when' said clamping ring is applie to the pron s andturned or rotated'thereon', it will,

with said studs, be drawn or carried towards the body of the holder insuch manner as inwardl the she to force the ends of the prongl intoclamping enga emen't wit In generaL-terms, t e clamping ring hasadi'ustable screw connection with the shadeho hy the engagement of itsinternal screw-threads der enabling the ring to be drawn over the ron sand to hold or enforce the latter in 0 amp g position.-

In the=form of construction illustrated in Figs. 1 to 4, inclusive,the'said pron 10, 10 extend outwardly or downwardly g-om the annularbody of the holder, and the clam ing ring is applied to the prongsbeneath t e clamping ring. In this case, in" applyin the holder, thelower end of the socket shefi will be inserted through the holder'andthe prongs until the ends of the latter pass over and bear againstthe inner or up er shoulder of the rib 6 on said holder. In tis'instance,

the clamping ring 12 is provided with an inwardly extending flange 13,adapted to -fit closely around the lower end of the socket shell and tobear against the outer shoulder of said rib, so that when the arts areassembled, as seenitin Fig. 2, the ends of the rongs will bear a 'ainstone shoulder of t e rib while the ange 13 on the clamping ring willengage the other shoulder of said rib, so that the holder will be firmlyclamped or' held from endwisemovement on the socket-shell.

In the construction illustrated in Figs. '6

and 7, the said prongs 10, 10 are reversely arranged, 'that'is to say,the extend up-:

. wardly or inwardly from the ody 7 of the holder and, ,in thi'sjinstance, the clamping ring 12 is without. any flange 13 and is appliedabove or inside theannular body 7 of the holder, as clearly seen in Fig.7 In assembling the parts made as last described, the clamping, ring isfirst slipped over the lower end of the socket-shellandcarricd above theribs 6 thereon. 'Theholder is then slipped upon the lowerend of theshell,

the ends of the prongs being carried past or over the rib 6.11ntil theyengage the inner shoulder of said rib. The clamping ring is then, turnedon screwed downwardly 'on the prongs so as to. clamp the ends of'thelatter firmly against the shell and the rib, which is partially embracedby the curved ends of the prongs.

The holder embracing the features of construction above described isadapted to be -firmly and, strongly connected with the socket shell andmay be easily and quickly applied thereto, p

A shade-holder attaching device embodying our invention may be variouslymodified wlth res ect to;it s details. of construction and we 0 not,therefore, desire to be l1m1ted to the specific features shown in theacc0m'-' the opposite side of panying drawings except so far as the samevided on its inner margin with a plurality of integral projections whichextend at right ang es to the body to constitute a, series of resllientprongs, said prongs being provided each with an outwardly extending studand the studs on the several prongs being spirally, arranged, and aclamping ring having internal screw-threads adapted for engagement withsaid studs. r

2. A shade-holder for lamp-sockets comprising a. flat, annularsheet-metal body provided on its inner margin with a plurality ofprojections which extend at right angles to said body to forma'plurality of resilient prongs, said pron s being bent inwardly attheir free ends to ear against one sideof a head on the lamp-socket, anda clamping ring surrounding and having clamping engagement with saidprongs, said clamping rin being provided with an inwardly extendingannular flange adapted to engage said bead on the lampsocket.

-3. A shade-holder for lamp-sockets comprising a flat, annularsheet-metal body proa plurality vided on its inner margin with ofprojections which extend at right angles to the body to form a series ofresilient prongs and are bent inwardly at their free lamp socket saidpro'ngsbein each provided with ail outwardly extend stud and ends toengage one side of a bead on the the studs on the several prongs eingspirally arranged, and a clam ing ring having internal screw 1 threadsat said studs and provided extending annular flange adapted to engagethe other side of saidwbead on the lampsocket; v

In testimony, that we claim the foregoing as our invention we aflix oursignatures in the presence of witnesses, this 17th day of April A. D.1908.

FRANKLIN ,OVERBAGH. FRANK- E. AYRES; j IRVIN H. BRENT.

apted to engage with an inwardly

